Uninitialized constant.

gistfile1.txt

# app/api/proj/api/v2/entities/committee_base.rb
module PROJ::API::V2::Entities
  class CommitteeBase < Grape::Entity; 
    expose :id
  end
  class CommitteeOffice < CommitteeBase; 
    expose :name
  end
end

present @committees, with: PROJ::API::V2::Entities::CommitteeOffice

Error:

 uninitialized constant PROJ::API::V2::Entities::CommitteeOffice
 
 
 If i use 
 
 present @committees, with: PROJ::API::V2::Entities::CommitteeBase
 
 its working
 
 Even i have the autoload paths app/api/* in application.rb
 
 If i make CommitteOffice into a seperate file its working. but i dont want it in a seperate file.